This Article studies the evolving international regime for investment, with a focus on Asia-Pacific experiences and with the aim to provide a macro analysis of the current treaty practices in this quickly developing region of the world. The regulation of international investment in Asia-Pacific region as a field of law has experienced major developments, particularly within the last decade. Currently, a large number of bilateral investment treaties and preferential trade agreements form the core of the Asian " noodle bowl " of investment treaties. The recent rise in multilateral agreements that have a wider regulatory scope are likely to both produce significant economic effects in Asia-Pacific economies and disseminate basic foreign investment protection principles to most Asia-Pacific countries.